Domains of Dread: Ravenloft Campaign:

Add a touch of horror to your AD&D game with this medieval Gothic setting! Vampires, werewolves, forbidding castles, and ghosts of all kinds inhabit the Demiplane of Dread. Features new rules for creating heroes native to the domains, adapting magic to the demiplane, and dealing with fear and horror checks when the characters experience the true terror that dominates the Ravenloft "RM" campaign.